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mastodon.radio is one of the many independent Mastodon servers you can use to participate in the fediverse.
Mastodon.Radio is a space for the Amateur (Ham) Radio community, anyone interested in Shortwave Listening (SWL), etc. Come join us and talk radio, technology, and more!

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Tube Time

did you know that 100 years ago there were *electromechanical* radio transmitters?

these things are so crazy, you just have to read this

(photo from en.wikipedia.org/wiki/Grimeton)

Dark hulking machine, radially symmetrical, faced with shiny brass gauges. very steampunk!
Diane Bruce VA3DB

@tubetime I did actually but this is a great post!
Years ago someone built an electro-mechanical *receiver* to receive SAQ.

wireless.org.uk/wireless.org.u

(edit found the moved page)

wireless.org.ukNo active devices!
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Tube Time

@va3db that's wild, they would probably have been better off using a synchro or something instead of a stepper to avoid cogging noise

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